White Castle

I ordered a #9- 20 cheese burgers and 4 small fries for $19.99 plus a large Dr. Pepper for $2.19. When I asked about why it cost $29.61 they said it was because you have to order online for that special... well I went back around to the drive-thru and took a picture of what I ordered and guess what it says nothing about online and it took 20 mins to get my meal then another couple of minutes cause they forgot my soda and condiments... not happy with service and upset for paying extra for that meal!